WO2023222447A1 - Dispositif d'entraînement pour une machine de travail - Google Patents

Dispositif d'entraînement pour une machine de travail Download PDF

Info

Publication number
WO2023222447A1
WO2023222447A1 PCT/EP2023/062232 EP2023062232W WO2023222447A1 WO 2023222447 A1 WO2023222447 A1 WO 2023222447A1 EP 2023062232 W EP2023062232 W EP 2023062232W WO 2023222447 A1 WO2023222447 A1 WO 2023222447A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
drive
drive device
motor shaft
switching element
Prior art date
Application number
PCT/EP2023/062232
Other languages
German (de)
English (en)
Inventor
Samuel WILLEMS
Raphael Himmelsbach
Stefan Igl
Manfred Auer
Gerhard Grömmer
Martin Sagmeister
Stefan Windpassinger
Original Assignee
Zf Friedrichshafen Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2023222447A1 publication Critical patent/WO2023222447A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/354—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K2025/005—Auxiliary drives driven by electric motors forming part of the propulsion unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • B60K2025/026—Auxiliary drives directly from an engine shaft by a hydraulic transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B60Y2200/221—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/70—Gearings
    • B60Y2400/73—Planetary gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2005—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with one sets of orbital gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/46—Gearings having only two central gears, connected by orbital gears
    • F16H3/48—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
    • F16H3/52—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
    • F16H3/54—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/24—Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes

Definitions

  • a first aspect of the invention relates to a drive device for a work machine.
  • a drive device can, for example, form part of a drive train.
  • the work machine can be used as an agricultural machine, e.g. B. be designed as a tractor, as a construction machine or as a special vehicle.
  • Examples of a work machine are a wheel loader and a tractor, in which the respective wheels can be driven by drive power from the drive device. Attachments can usually be mounted on work machines, which can also be driven by the work machine.
  • the work machine can provide a power tap for this purpose.
  • the drive device has a first electric machine with a first motor shaft. The first electric machine is designed to provide a first drive power on the first motor shaft.
  • the drive device has a second electric machine with a second motor shaft.
  • the second electric machine is designed to provide a second drive power to the second motor shaft ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12.
  • Each of the electric machines has, for example, only one motor shaft. The designation as the second motor shaft serves to assign it to the second electric machine.
  • the electric machines can be designed to convert electrical energy into mechanical energy.
  • the electric machines can each be designed for recuperation.
  • An electric machine can be designed, for example, as an asynchronous motor or synchronous motor.
  • the drive device has a power source, such as a rechargeable battery. The energy source can be used to supply the two electric machines with electricity for their operation.
  • the drive device can have an associated inverter for each electric machine, which controls a drive power output of the electric machine.
  • Each electric machine of the drive device can also have an associated energy source.
  • the drive device has a first drive output shaft. For example, part of the drive power generated by the electric motors can be output on the first drive output shaft, for example to an assigned drive axle of the work machine.
  • the first travel output shaft can, for example, be mechanically operatively connected to a rear axle of the work machine.
  • a travel output shaft can, for example, be mechanically operatively connected to the associated drive axle of the work machine via an axle differential. Alternatively or additionally, for example, a mechanical active connection via respective bevel gears is also possible.
  • a travel output shaft can form an output shaft of the drive device.
  • the drive device can be designed to transmit drive power from the first motor shaft to the first drive output shaft.
  • the first motor shaft can be mechanically operatively connected to the first drive output shaft by means of a drive gear.
  • the drive device can have the driving gear.
  • the drive transmission can be designed to provide different ratios between the first motor shaft and the first drive output shaft.
  • the driving gear can also be designed to have a ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 to interrupt torque transmission from the first motor shaft to the first drive output shaft, for example in a certain switching state. This can provide an idle.
  • the drive device has a first PTO shaft and a second PTO shaft. Power take-off can be provided on a PTO shaft.
  • the first PTO shaft can be designed, for example, as a front PTO shaft.
  • the second PTO shaft can be designed as a rear PTO shaft.
  • attachments can be supplied with mechanical power from the work machine on each PTO shaft.
  • the drive device can, for example, be designed to drive the PTO shaft at a substantially constant speed, for example one of two predetermined PTO shaft speeds.
  • the drive device can alternatively or additionally be designed, for example, to drive the PTO shaft at variable speeds.
  • the drive device can be designed to selectively separate a drive power transmission to one of the two or both PTO shafts.
  • the second motor shaft can be mechanically operatively connected to the first PTO shaft and to the second PTO shaft.
  • the second motor shaft in a first switching state, can only be mechanically operatively connected to the first PTO shaft.
  • in a second switching state the second motor shaft can only be mechanically operatively connected to the second PTO shaft.
  • the second motor shaft can be mechanically operatively connected to the first PTO shaft and the second PTO shaft in a third switching state.
  • the second motor shaft can not be mechanically operatively connected to either of the two PTO shafts.
  • the second electric machine can drive auxiliary units such as hydraulic pumps without driving an attachment or one of the two PTO shafts.
  • the second electric machine can alternatively or additionally drive a travel drive shaft without driving an attachment.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • the transmission has an input shaft, an output shaft, a planetary gear set, a travel switching element and a brake.
  • the planetary gear set has a sun gear, a planet carrier and a ring gear.
  • a planetary gear set can be designed as a normal planetary gear set and is only referred to as such, for example, for purposes of classification.
  • a planetary gear set can only have three rotating elements.
  • a planetary gear set has a sun gear, a planet carrier and a ring gear as rotating elements.
  • One or more planet gears can be rotatably mounted on the planet carrier.
  • the traveling planetary gear set can be designed, for example, as a minus planetary gear set. With a minus planetary gear set, the respective planetary gears mesh with the sun gear and the ring gear.
  • the traveling planetary gear set can, for example, also be designed as a plus planetary gear set, in which two sets of planet gears are rotatably mounted on the planet carrier.
  • the driving switching element is designed, for example, as a frictional switching element.
  • the designation drive switching element is used to assign functions.
  • Driving switching elements can be designed like other switching elements.
  • the brake of the transmission can be a switching element, by means of which a rotating element of a planetary gear set can be fixed to a stationary component.
  • the brake can be designed, for example, as a frictional switching element.
  • the sun gear of the planetary gear set is permanently connected to the input shaft of the transmission in a rotationally fixed manner.
  • the planet carrier of the planetary gear set is permanently connected to the output shaft of the planetary gear set in a rotationally fixed manner.
  • the ring gear of the traveling planetary gear set can be fixed by means of the first brake of the travel transmission, for example by means of a rotationally fixed connection to a stationary component of the drive device.
  • the planetary gear set can be locked using the travel switching element.
  • the travel switching element can be designed to connect two rotating elements of the second planetary gear set to one another in a rotationally fixed manner. When locked, all rotating elements of a planetary gear set rotate at the same angular speed.
  • the result is a very compact transmission in which two transmission stages with high efficiency can be provided, which are very suitable for work machines.
  • By blocking a loss due to meshing of the respective gears in the transmission can be avoided in the gear ratio for the highest driving speed.
  • This means that driving can be particularly efficient when high performance requirements are required.
  • the transmission can provide idle speed.
  • the drive device can take advantage of the fact that electric machines can allow a more flexible use of the installation space of the work machine compared to a drive device only with an internal combustion engine. This means that the work machine can now have two PTO shafts, with only one or both PTO shafts being driven during operation. This makes it possible to use or at least attach two attachments at the same time.
  • the two attachments are only driven by the second electric machine. So, even if the mechanical structure is largely the same compared to a work machine with only an internal combustion engine, no additional motor needs to be provided to drive the second PTO shaft. There may be an additional power interface for the second PTO.
  • the drive of the two PTO shafts can be integrated into a central drive.
  • the drive device can have a first power take-off gear and alternatively or additionally a second power take-off gear.
  • a power take-off gear can be designed to provide a mechanical operative connection between a power take-off shaft and an attachment, for example with different gear ratios. Even if the two PTO shafts are driven together, the first PTO shaft can have a different speed than the second PTO shaft.
  • each power take-off gear can be designed to provide two different gear ratios.
  • the drive device can be designed to be expanded modularly. In this way, a standardized drive device can be adapted to different customer requirements. Examples of modular extensions can be found in the embodiments described below.
  • the modular expansion of the drive device can take place before installation in the work machine. In another embodiment, the modular expansion can also take place after the drive device has been installed in the work machine. If two elements are mechanically connected, they are directly or indirectly coupled to one another in such a way that a movement of one element causes a reaction of the other element.
  • a mechanical active connection can be provided by a positive or frictional connection.
  • one or more spur gear stages can be involved in the drive power transmission.
  • the mechanical active connection can correspond to a meshing of corresponding toothings of two elements. Additional elements, for example one or more spur gear stages, can be provided between the elements.
  • a permanently rotationally fixed connection between two elements is understood to mean a connection in which the two elements are essentially rigidly coupled to one another in all intended states. This also includes a frictional connection, in which intentional or unwanted slippage can occur.
  • Permanently non-rotatably connected elements can be present as individual components connected to one another in a non-rotatable manner or in one piece.
  • a connection between two elements via another element can mean that this additional element is involved in an indirect active connection between the two elements.
  • this element can be arranged in the flow of force between these two elements.
  • a connection between two elements via two or more elements can mean that these additional elements are all involved in an indirect active connection between the two elements.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • a switchable connection can enable torque transmission between two elements in one state, for example through a rigid coupling, and essentially interrupt this torque transmission in another state.
  • a corresponding switching element can be provided between the two elements. If a torque can be transferred from one element to another element, actuation of a switching element may be necessary for this, for example in order to establish a mechanical operative connection.
  • a spur gear stage can, for example, be designed in one or more stages.
  • a single-stage spur gear stage can, for example, have two gears that mesh with one another.
  • a two-stage spur gear stage can, for example, have three gears that mesh with each other in pairs.
  • a switching element can, for example, be designed to be frictionally or positively locking.
  • An example of a frictional switching element is a multi-plate clutch.
  • An example of a positive switching element is a claw clutch.
  • a switching element can be closed, for example, by actuation.
  • a switching element can be actuated with oil pressure to enable torque transmission between two elements.
  • a switching element can be designed to separate a mechanical operative connection between two elements in one state.
  • a switching element can also be designed as a double switching element, which selectively connects a first element to a second or third element.
  • a double switching element can have a neutral position.
  • the drive device can have a control device for controlling the switching elements and thus switching respective operating modes. ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • the drive device has an intermediate PTO shaft and a first spur gear stage.
  • the intermediate PTO shaft can be mechanically operatively connected to the first PTO shaft by means of a first PTO switching element.
  • the intermediate PTO shaft can be connected in a rotationally fixed manner to the first PTO shaft by means of the first PTO switching element.
  • the intermediate PTO shaft can be mechanically operatively connected to the second PTO shaft by means of a second PTO switching element.
  • the intermediate PTO shaft can be connected in a rotationally fixed manner to the second PTO shaft by means of the second PTO switching element.
  • the second motor shaft can be mechanically operatively connected to the intermediate PTO shaft by means of the first spur gear stage. Only one output shaft and, alternatively or additionally, a power interface are necessary for the second electric machine in order to be able to drive both PTO shafts selectively. A simple and space-saving construction can result.
  • the designation tap switching element is used to assign functions.
  • Tap switching elements can be designed like other switching elements.
  • the two PTO switching elements are designed to be frictionally engaged in order to enable starting and, alternatively or additionally, switching on one of the two PTO shafts when the other PTO shaft is already being driven via the intermediate PTO shaft.
  • the drive device can have an internal combustion engine with a combustion engine shaft, which is designed to provide combustion engine drive power on the combustion engine shaft.
  • the internal combustion engine can be designed, for example, as a diesel engine.
  • the combustion engine shaft can be mechanically operatively connected to the intermediate PTO shaft, for example by means of a combustion switching element.
  • the combustion engine shaft can be connected in a rotationally fixed manner to the intermediate PTO shaft by means of the combustion switching element.
  • the name combustion switching element is used to assign functions.
  • the combustion engine switching element can be designed like other switching elements.
  • the combustion engine switching element is designed to be frictionally engaged.
  • the first PTO shaft can be connected to the combustion engine shaft, the combustion engine switching element and the first PTO switching element ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 PTO intermediate shaft can be mechanically effectively connected.
  • the first PTO shaft can be connected in a rotationally fixed manner to the combustion engine shaft by means of the first PTO switching element.
  • the internal combustion engine can drive one or both PTO shafts alone or with the second electric machine. Overall, a particularly high power output can be achieved.
  • the internal combustion engine can, for example, not be driven and the first PTO shaft can still be driven by the second electric machine via the internal combustion engine shaft.
  • the internal combustion engine can, for example, also drive the second electric machine in order to generate electricity for an energy storage device or the first electric machine.
  • the second electric machine then acts as a generator.
  • the combustion engine shaft can, for example, extend through the combustion engine, so that it is possible to connect further elements at both axial ends.
  • the drive device has a second drive output shaft.
  • the second travel output shaft can, for example, be mechanically operatively connected to a front axle of the work machine.
  • the drive device can be designed to transmit drive power from the first motor shaft to the second drive output shaft.
  • the drive device can provide all-wheel drive through the second drive output shaft.
  • the drive device can be designed for torque transmission from the first travel output shaft to the second travel output shaft.
  • the second travel output shaft can be mechanically operatively connected to the first travel output shaft.
  • the second travel output shaft can also be mechanically operatively connected to the first travel output shaft.
  • the drive device can, for example, have an all-wheel spur gear stage and an all-wheel shifting element, wherein the first drive output shaft can be mechanically operatively connected to the second drive output shaft via the all-wheel spur gear stage by means of the all-wheel shift element.
  • the designation four-wheel switching element and four-wheel spur gear stage serves to assign functions.
  • All-wheel shifting element can be designed like other shifting elements and the all-wheel spur gear stage can be designed like other spur gear stages.
  • the all-wheel shifting element is designed to be frictionally engaged and the all-wheel spur gear stage is single-stage.
  • the drive device has an all-wheel spur gear stage, an all-wheel switching element, an additional power switching element and a third electric machine with a third motor shaft, which is designed to provide a third drive power on the third motor shaft.
  • the third motor shaft can be mechanically operatively connected to the second drive output shaft by means of the additional power switching element.
  • the first drive output shaft can be mechanically operatively connected to the second drive output shaft via the all-wheel spur gear stage by means of the all-wheel shifting element.
  • the third electric machine can support the first electric machine in driving when all-wheel drive is activated. Driving efficiency may be lower when driving with four-wheel drive, so greater power may be required.
  • the third electric machine can then provide this without the first electric machine having to be designed for peak loads that only occur rarely when driving with all-wheel drive.
  • the available installation space can, for example, be used efficiently and alternatively or additionally very flexibly.
  • the drive device has a summation gear, a brake and a third electric machine with a third motor shaft, which is designed to provide a third drive power on the third motor shaft.
  • a summation gear can, for example, have a plurality of input shafts and an output shaft on which drive power supplied to the input shafts is provided together.
  • the summing gear can be designed, for example, as a planetary gear set.
  • a brake can be a switching element by means of which a rotatable element can be fixed to a stationary component.
  • the brake can be designed, for example, as a frictional switching element.
  • the planetary gear set can have a sun gear, a planet carrier and a ring gear ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12.
  • One or more planet gears can be rotatably mounted on the planet carrier.
  • the planetary gear set is designed, for example, as a minus planetary gear set.
  • each planet gear meshes with both the ring gear and the sun gear.
  • a torque can be transferable from the third motor shaft to a first input shaft of the summing gear.
  • the first input shaft of the summing gear can be designed, for example, as a sun gear.
  • the first drive output shaft can be mechanically operatively connected to a second input shaft of the summing gear.
  • the second input shaft of the summation gear can be mechanically operatively connected to the first motor shaft via the drive gear and the first drive output shaft.
  • the second input shaft of the summing gear can be designed, for example, as a ring gear.
  • An output shaft of the summation gear can be permanently connected in a rotationally fixed manner to the second drive output shaft.
  • the output shaft of the summing gear can be designed, for example, as a planet carrier.
  • a translation of the summing gear can be changed.
  • the result is an adjustable all-wheel drive, optionally also in a power-split version.
  • the first input shaft of the summing gear can be locked using the brake. This allows a rigid all-wheel drive to be switched, which can be particularly efficient.
  • the third electric machine can be deactivated, for example.
  • the drive device has a motor coupling switching element.
  • the name motor coupling switching element is used to assign functions.
  • Motor coupling switching elements can be designed like other switching elements. For example, respective motor coupling switching elements are designed to be frictionally engaged.
  • the first motor shaft can be mechanically operatively connected to the second motor shaft by means of the motor coupling switching element, for example via a spur gear stage.
  • the active connection can also take place at least partially via a spur gear stage, via which the first motor shaft can be mechanically operatively connected to the first travel output shaft.
  • the motor coupling switching element can, for example, be arranged coaxially on the intermediate PTO shaft, the first motor shaft being connected to the intermediate PTO shaft by means of the motor coupling switching element ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 can be mechanically connected.
  • the first electric machine can support the second electric machine in driving the PTO shafts.
  • the second electric machine can support the first electric machine in driving the travel drive shafts. New operating modes emerge.
  • respective electric machines can be dimensioned smaller, since usually only low speeds are driven at maximum power take-off load or the machine stands on the spot. Likewise, at maximum driving speed, no or only a small power take-off load is usually required.
  • a ground speed PTO function can also be provided.
  • the drive device has a first motor coupling switching element and a second motor coupling switching element.
  • the third motor shaft can be mechanically operatively connected to the second motor shaft by means of the first motor coupling switching element.
  • the first motor shaft can be mechanically operatively connected to the third motor shaft by means of the second motor coupling switching element.
  • the third electric machine can, for example, support the second electric machine independently of the first electric machine.
  • the first electric machine can only support the second electric machine if this is also possible by the third electric machine or if the first motor coupling switching element is closed.
  • the first motor coupling switching element and the second motor coupling switching element must be closed.
  • the function of the first motor coupling switching element can therefore correspond to the motor coupling switching element described in the previous embodiment.
  • the first electric machine and the third electric machine can support the second electric machine in driving the PTO shafts.
  • the third electric machine can also support the second electric machine in driving the PTO shafts alone, while the first electric machine only drives the work machine.
  • the second electric machine can also be the first ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12 Support electric machine in driving the travel drive shafts.
  • the drive device has a working hydraulic supply device, a system hydraulic supply device and an auxiliary electric machine with an auxiliary motor shaft.
  • An auxiliary electric machine can be designed as a normal electric machine.
  • the auxiliary electric machine can, for example, be significantly less powerful compared to the first electric machine and the second electric machine and optionally also other electric machines described here.
  • the auxiliary motor shaft can be a normal motor shaft, which was only designated as such for identification purposes.
  • the working hydraulic supply device can be designed to supply working hydraulics with pressure.
  • the work hydraulics can be used to operate the respective tools of the work machine, such as a shovel.
  • a working hydraulic supply device can, for example, have a fixed displacement pump and a variable displacement pump, which are driven together by a shaft. However, a working hydraulic supply device can also have, for example, only one variable displacement pump.
  • the system hydraulic supply device can be designed to supply pressure to respective control hydraulics.
  • the system hydraulic supply device can provide a transmission oil pressure and a pressure for actuating respective switching elements of the drive device.
  • the system hydraulic supply device can, for example, have a constant pump for the transmission oil pressure and a constant pump for the switching element actuation pressure, which are driven together by a shaft.
  • the system hydraulic supply device can also have only one fixed displacement pump.
  • the system hydraulic supply device and the working hydraulic device may be separate devices.
  • Respective oil circuits supplied with this can be fluidically separated at least in a pressure range.
  • the system hydraulic supply device can be mechanically operatively connected to the second motor shaft, for example by means of a spur gear stage via the intermediate PTO shaft.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • the auxiliary electric machine is always operated at a predetermined minimum speed in order to enable the respective switching elements to be actuated.
  • the second electric machine can therefore stand still in certain operating states during operation of the work machine, which can be efficient.
  • a module consisting of an auxiliary electric machine and a system hydraulic supply device can enable flexible use of installation space independently of other components of the drive device.
  • the second electric machine can be dimensioned to be less powerful.
  • the auxiliary electric machine and the second electric machine can thus be operated particularly efficiently, for example during normal working cycles of the work machine and less frequently in inefficient operating points.
  • the auxiliary motor shaft can be permanently connected in a rotationally fixed manner to an input shaft of the system hydraulic supply device.
  • a module formed in this way can be free of switching elements and spur gear stages. If, on the other hand, the system hydraulic supply device is driven by the second electric machine, the second electric machine can, for example, always be operated at a predetermined minimum speed when the work machine is being operated in order to enable the respective switching elements to be actuated.
  • the drive device has a working hydraulic supply device and a system hydraulic supply device.
  • the second motor shaft can be mechanically operatively connected to the working hydraulic supply device and to the system hydraulic supply device. This means there is no need for an auxiliary electric machine.
  • the drive device can, for example, be particularly compact and require few electric machines.
  • the second electric machine can, for example, always run at a minimum speed when the work machine is operating.
  • the drive device has a second spur gear stage.
  • the working hydraulic supply device can be equipped with a shaft of the first spur gear stage ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 must be permanently connected in a rotationally fixed manner.
  • the working hydraulic supply device can be arranged in front of the intermediate PTO shaft in the torque flow from the second drive power.
  • the system hydraulic supply device can be mechanically operatively connected to the second motor shaft via the first spur gear stage and the second spur gear stage. Particularly efficient speed ratios can result, although the second electric machine drives both the system hydraulic supply device and the working hydraulic supply device.
  • the first spur gear stage and the second spur gear stage can have a common gear, which is, for example, permanently connected to the intermediate PTO shaft in a rotationally fixed manner.
  • the drive device can therefore have a particularly small number of gears.
  • the first motor shaft can be mechanically operatively connected to the second motor shaft by means of the motor coupling switching element via the second spur gear stage.
  • an additional spur gear stage or at least additional gears can be dispensed with in order to be able to couple the first motor shaft with the second motor shaft.
  • a mechanical active connection between the first motor shaft and the second motor shaft can use the second spur gear stage.
  • the drive device can be axially very compact.
  • the motor coupling switching element can, for example, be arranged coaxially with an input shaft of the system hydraulic supply device. A very compact design can result.
  • the planet carrier can be connected in a rotationally fixed manner to the sun gear by means of the travel switching element. This means that the planetary gear set can be structurally easily blocked by the travel switching element. For example, no additional hollow shafts are necessary.
  • the traveling planetary gear set is designed as a minus planetary gear set. It can be a ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 results in a structurally simple and efficient transmission with gear ratios that are particularly suitable for work machines.
  • a second aspect concerns a work machine.
  • the work machine has a drive device according to the first aspect. Respective advantages and further features can be found in the description of the first aspect, with embodiments of the first aspect also forming embodiments of the second aspect and vice versa.
  • the work machine has a drive axle and, in a further embodiment, an additional drive axle. A torque can be transferable from the first drive output shaft to the first drive axle.
  • a torque can be transferable from the second travel output shaft, if present, to the further drive axle.
  • the drive axle is designed, for example, as the rear axle of the work machine.
  • the further drive axle is designed, for example, as the front axle of the work machine.
  • wheels are arranged at opposite ends on each drive axle.
  • Each drive axle can have an axle differential and, alternatively or additionally, have a wheel drive per wheel.
  • the work machine can have a driving brake, which is arranged, for example, on the rear axle.
  • the work machine can also have a driving brake for each drive axle.
  • Fig. 1 schematically illustrates a first embodiment of a drive device for a work machine with two electric machines and a drive transmission.
  • FIG. 2 schematically illustrates a second embodiment of a drive device for a work machine, which additionally has an internal combustion engine.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • Fig. 3 schematically illustrates a third embodiment of a drive device for a work machine, in which the electric machines are connected differently compared to the first embodiment.
  • 4 schematically illustrates a fourth embodiment of a drive device for a work machine, in which a work hydraulic supply device and a system hydraulic supply device are connected differently compared to the first embodiment.
  • 5 schematically illustrates a fifth embodiment of a drive device for a work machine, in which a first motor shaft and a second motor shaft can be mechanically operatively connected to one another.
  • FIG. 6 schematically illustrates a sixth embodiment of a drive device for a work machine, in which the first motor shaft and the second motor shaft can be mechanically operatively connected to one another, unlike the fifth embodiment.
  • 7 schematically illustrates a seventh embodiment of a drive device for a work machine, which has an auxiliary electric machine by means of which the system hydraulic supply device can be driven.
  • 8 schematically illustrates an eighth embodiment of a drive device for a work machine, which has a third electric machine, by means of which a second drive output shaft can also be driven.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • Fig. 9 schematically illustrates a ninth embodiment of a drive device for a work machine, in which the motor shafts can be operatively connected differently compared to the eighth embodiment.
  • FIG. 10 schematically illustrates a tenth embodiment of a drive device for a work machine, which has a third electric machine and a summation gear in order to provide a controllable all-wheel drive in a power-split design.
  • 11 schematically illustrates an eleventh embodiment of a drive device for a work machine, in which, in comparison to the tenth embodiment, the third motor shaft can be mechanically operatively connected to the second motor shaft and the first motor shaft can be mechanically operatively connected to the third motor shaft.
  • FIG. 1 schematically illustrates a drive device 10 of a work machine.
  • the drive device 10 has a first electric machine EM1 with a first motor shaft 12, which is designed to provide a first drive power to the first motor shaft 12.
  • the drive device 10 has a second electric machine EM2 with a second motor shaft 14, which is designed to provide a second drive power to the second motor shaft 14.
  • the two electric machines EM1, EM2 are designed for the same speed and have essentially the same power.
  • the drive device has a first drive output shaft 16 and a second drive output shaft 18.
  • the first drive output shaft 16 is mechanically operatively connected to a rear axle 20.
  • the rear axle 20 has an axle differential 22, a driving brake 24 on both sides, a wheel gear 26 on both sides and a wheel 28 on both sides.
  • the rear axle 20 can be driven via the first drive output shaft 16 for driving the work machine.
  • the second drive output shaft 18 is mechanically connected to a front axle, not shown.
  • the second drive output shaft 18 is via an all-wheel spur gear stage 30 ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 can be mechanically operatively connected to the first drive output shaft 16 by means of an all-wheel switching element AS.
  • a rigid all-wheel drive can thus be switched on in order to drive the work machine for driving with the rear axle 20 and the front axle together.
  • the first motor shaft 12 can be mechanically operatively connected to the first travel output shaft 16 by means of a travel gear 32.
  • the travel gear 32 has an input shaft 34, which is mechanically operatively connected to the first motor shaft 12. In the first embodiment of the drive device 10, the input shaft 34 of the travel gear 32 is permanently connected to the first motor shaft 12 in a rotationally fixed manner.
  • the drive transmission 32 has an output shaft 36, which is permanently connected to the first drive output shaft 16 in a rotationally fixed manner.
  • the driving gear 32 has a planetary gear set FP, a travel switching element FS and a brake B.
  • the traveling planetary gear set FP has a sun gear 72, a planet carrier 74 and a ring gear 76 and is designed as a minus planetary gear set.
  • Several planet gears 78 are rotatably mounted on the planet carrier 74, each of which meshes with the sun gear 72 and the ring gear 76.
  • the sun gear 72 is permanently connected in a rotationally fixed manner to the input shaft 34 of the transmission 32.
  • the planet carrier 74 is permanently connected to the output shaft 36 of the travel gear 32 in a rotationally fixed manner.
  • the ring gear 76 can be connected in a rotationally fixed manner to a stationary component of the drive device 10 by means of the brake B of the travel gear 32 and can therefore be fixed.
  • the travel planetary gear set FP can be locked by means of the travel switching element FS, in that the planet carrier 74 can be connected to the sun gear 72 in a rotationally fixed manner. In this way, two transmission stages can be provided by the drive gear 32 in a very compact design.
  • the brake B the drive gear 32 is also cost-effective. At high driving speeds, the driving gear 32 is also very efficient due to the locking of the planetary gear set.
  • the drive device has a first PTO shaft 40 and a second PTO shaft 42.
  • the first PTO shaft 40 is designed as a front PTO shaft.
  • the second PTO shaft 42 is designed as a rear PTO shaft. With the second PTO shaft 42 there is one ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 two-stage power take-off gear 60 connected. A further power take-off gear, not shown, is connected to the first PTO shaft 40. With the two PTO shafts 40, 42, two attachments can be supplied with PTO power.
  • the second motor shaft 14 can be mechanically operatively connected to the first PTO shaft 40 and to the second PTO shaft 42.
  • the second motor shaft 14 is mechanically operatively connected to an intermediate PTO shaft 46 by means of a first spur gear stage 44.
  • the intermediate PTO shaft 46 can be connected in a rotationally fixed manner at the front to the first PTO shaft 40 by means of a first PTO switching element ZF1.
  • the intermediate PTO shaft 46 can be connected in a rotationally fixed manner at the rear to the second PTO shaft 42 by means of a second PTO switching element ZF2.
  • the drive device 10 has a working hydraulic supply device 48 and a system hydraulic supply device 50.
  • the working hydraulic supply device 48 has a fixed displacement pump 52 and a variable displacement pump 54.
  • the working hydraulic supply device 48 is designed to supply working hydraulics with pressure in order to be able to hydraulically operate a tool.
  • the system hydraulic supply device 50 has two fixed displacement pumps 56.
  • the system hydraulic supply device 50 is designed to provide a system pressure for actuating the switching elements of the drive device 10 and for actuating a steering system, as well as to provide a transmission oil pressure.
  • the system hydraulic supply device 50 and the working hydraulic supply device 48 are together mechanically operatively connected to the second motor shaft 14 by means of a spur gear stage 58 via the intermediate PTO shaft 46 and the first spur gear stage 44.
  • the second electric machine EM2 always runs at a minimum speed during operation of the work machine in the first embodiment in order to provide a minimum system pressure.
  • Fig.2 shows a second embodiment of the drive device 10, which is similar to the first embodiment. Accordingly, only differences are described.
  • the ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12 Internal combustion engine shaft 202 can be connected in a rotationally fixed manner to the intermediate PTO shaft 46 by means of a combustion switching element VS.
  • the second electric machine EM2 can be driven by the internal combustion engine 200 as a generator.
  • the first PTO shaft 40 can be connected in a rotationally fixed manner to the internal combustion engine shaft 202 by means of the first PTO switching element ZF1. The first PTO shaft 40 can thus be driven by the internal combustion engine 200 or, when the combustion switching element VS is closed, by the second electric machine EM2.
  • the internal combustion engine 200 can also be provided in other embodiments, which are shown in FIGS. 3 to 11.
  • Fig.3 shows a third embodiment of the drive device 10, which is similar to the first embodiment. Accordingly, only differences are described.
  • the first motor shaft 12 is not permanently rotationally fixed to the input shaft 34, but is mechanically operatively connected via a single-stage spur gear stage 500.
  • the first spur gear stage 44 which mechanically connects the second motor shaft 14 to the intermediate PTO shaft 46, is designed in two stages in the third embodiment instead of in one stage, as in the first embodiment.
  • the two electric machines EM1, EM2 can be designed for a higher speed level in the third embodiment compared to the first embodiment.
  • Fig.4 shows a fourth embodiment of the drive device 10, which is similar to the third embodiment. Accordingly, only differences are described.
  • the working hydraulic supply device 48 is permanent with a shaft 600 of the two-stage first spur gear stage 44 ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 non-rotatably connected.
  • the system hydraulic supply device 50 is mechanically operatively connected to the second motor shaft 14 via the first spur gear stage 44 and a second spur gear stage 602.
  • the first spur gear stage 44 and the second spur gear stage 602 have a common gear 604, which is permanently connected to the intermediate PTO shaft 46 in a rotationally fixed manner.
  • the spur gear stage 500 which connects the first motor shaft 12 to the input shaft 34 of the drive transmission 32, is designed in multiple stages in the fourth embodiment of the drive device 10. This results in a stronger radial nesting, so that the sixth embodiment of the drive device 10 is axially very short.
  • This uses a radial installation space that is required by a fuel tank in conventional work machines with internal combustion engines.
  • better speed levels result on the working hydraulic supply device 48 and the system hydraulic supply device 50. Accordingly, two different gear ratios in the power take-off gear 60 can be dispensed with.
  • the power take-off gear 60 is therefore designed as a simple spur gear stage without a switching element.
  • the second electric machine EM2 is designed for higher speeds than the first electric machine EM1.
  • Fig.5 shows a fifth embodiment of the drive device 10, which is similar to the fourth embodiment. Accordingly, only differences are described.
  • a first motor coupling switching element MS1 is additionally provided.
  • the first motor shaft 12 can be mechanically operatively connected to the second motor shaft 14 by means of the first motor coupling switching element MS1.
  • a spur gear stage 700 is connected to a central shaft 702 of the spur gear stage 500, by means of which the first motor shaft 12 is mechanically operatively connected to the input shaft 34 of the travel transmission 32.
  • the first motor coupling switching element MS1 is arranged on the intermediate PTO shaft 46 and is designed to connect the spur gear stage 700 to the intermediate PTO shaft 46.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12 Accordingly, the first electric machine 12 and the second electric machine 14 can support each other in driving the two PTO shafts 40, 42 and the two travel output shafts 16, 18.
  • the overall system performance can be lower because the machine usually does not have to provide maximum power take-off and maximum driving performance at the same time.
  • the second electric machine EM2 is therefore designed for a lower maximum power than the first electric machine EM1. Accordingly, the second electric machine EM2 in the seventh embodiment is particularly small.
  • a ground speed PTO function is provided.
  • Fig.6 shows a sixth embodiment of the drive device 10, which is similar to the fifth embodiment. Accordingly, only differences are described.
  • the mechanical connectivity of the first motor shaft 12 with the second motor shaft 14 is designed differently.
  • the first motor coupling switching element MS1 is arranged coaxially with a drive shaft of the system hydraulic supply device 50.
  • a spur gear stage 800 is provided instead of the spur gear stage 700, which effectively connects the spur gear stage 500 to the intermediate PTO shaft 46.
  • the spur gear stage 800 provides a mechanical operative connection between the input shaft 34 of the transmission 32 and the drive shaft of the system hydraulic supply device 50 when the motor coupling switching element is closed.
  • the first motor shaft 12 can be mechanically operatively connected to the second motor shaft 14 via the second spur gear stage 602 by means of the first motor coupling switching element 12.
  • the drive device 10 according to the sixth embodiment is particularly short axially.
  • Fig. 7 shows a seventh embodiment of the drive device 10, which is similar to the fifth embodiment. Accordingly, only differences are described.
  • the system hydraulic supply device 50 is not driven by the second electric machine EM2.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12 Accordingly, the second spur gear stage 602 is also omitted.
  • the seventh embodiment of the drive device 10 has an auxiliary electric machine HM with an auxiliary motor shaft 900.
  • the auxiliary motor shaft 900 is mechanically operatively connected to the system hydraulic supply device 50, in the example shown by the auxiliary motor shaft 900 being permanently non-rotatably connected to the drive shaft of the system hydraulic supply device 50.
  • This allows the system hydraulic supply device 50 to be arranged and driven independently. This improves flexibility in the use of installation space.
  • the second electric machine EM2 can be switched off if no power take-off or support of the travel drive is required by the second electric machine EM2.
  • the auxiliary electric machine HM is operated at a minimum speed instead of the second electric machine EM2 when the working machine is operating. This means that the second electric machine EM2 can be operated more frequently at an efficient operating point.
  • FIG. 8 shows an eighth embodiment of the drive device 10, which is similar to the fifth embodiment. Accordingly, only differences are described.
  • the eighth embodiment of the drive device 10 additionally has a third electric machine EM3 with a third motor shaft 1000.
  • the third electric machine EM3 is designed to provide a third drive power on the third motor shaft.
  • the third motor shaft 1000 can be mechanically operatively connected to the second travel output shaft 18 via a spur gear stage 1002, which is designed here in multiple stages, by means of an additional power switching element ZL.
  • the third electric machine EM3 is designed for a lower power than the first electric machine EM1.
  • a controllable all-wheel drive function can be provided in addition to a rigid all-wheel drive function.
  • the all-wheel drive switching element AS When the all-wheel drive switching element AS is activated, the two drive axles are driven at a fixed speed ratio.
  • the third electric machine EM3 can ZF Friedrichshafen AG file 211953- Friedrichshafen 2022-05-12 support the first electric machine EM1 in driving both the two PTO shafts 40, 42 and the two travel output shafts 16, 18. Accordingly, the first electric machine in this embodiment can be designed for a lower power, whereby installation space and costs can be saved.
  • Fig. 9 shows a ninth embodiment of the drive device 10, which is similar to the eighth embodiment. Accordingly, only differences are described.
  • the third motor shaft 1000 can be mechanically operatively connected to the second motor shaft 14.
  • the third motor shaft 1000 can be mechanically operatively connected to the intermediate PTO shaft 46 via a spur gear stage 1100 by means of the first motor coupling switching element MS1.
  • the first motor shaft 12 can also continue to be mechanically operatively connected to the second motor shaft 14.
  • a second motor coupling switching element MS2 is provided, by means of which the second motor shaft 14 in the embodiment shown in FIG. 11 can be mechanically connected to the third motor shaft 1000 via the spur gear stage 1100. If the first motor coupling switching element MS1 and the second motor coupling switching element MS2 are actuated, the drive power can be transmitted from the first electric machine EM1 to the intermediate power take-off shaft 46.
  • the ninth embodiment allows an operating mode in which the third electric machine EM3 supports the second electric machine EM2 in driving the PTO shafts and the first electric machine EM1 drives respective drive output shafts 16, 18 alone.
  • the second motor coupling switching element MS2 and the additional power switching element ZL are not actuated while the first motor coupling switching element MS1 is actuated.
  • ZF Friedrichshafen AG File 211953- Friedrichshafen 2022-05-12
  • the first electric machine EM1 and the third electric machine EM3 are designed so that a maximum required driving performance can only be provided together.
  • the driving device 10 of the ninth embodiment is compact and inexpensive. 10 shows a tenth embodiment of the drive device 10, which is similar to the eighth embodiment. Accordingly, only differences are described.
  • the first electric machine EM1 and the third electric machine EM3 are connected in such a way that the drive device 10 is electrically power-split and can provide a variable all-wheel drive.
  • the additional power switching element ZL is no longer required.
  • a summation gear 1200 is provided, which is designed as a minus planetary gear set with a sun gear 1202 as the first input shaft, a ring gear 1204 as the second input shaft and a planet carrier 1206 as the output shaft.
  • Several planetary gears 1208 are rotatably mounted on the planet carrier, each of which meshes with the sun gear 1202 and the ring gear 1204.
  • the third motor shaft 1000 is mechanically operatively connected to the sun gear 1202 via the spur gear stage 1002.
  • the first drive output shaft 16 is mechanically operatively connected to the ring gear 1204 via the all-wheel spur gear stage 30, so that a torque can be transmitted from the first motor shaft 12 to the second input shaft of the summing gear 1200 via the drive gear 32.
  • the planet carrier 1206 is permanently connected to the second drive output shaft 18 in a rotationally fixed manner.
  • a transmission ratio on the summing gear 1204 can be varied.
  • the third electric machine EM3 is designed for low loads, as it essentially only varies the gear ratio.
  • the sun gear 1202 of the summing gear 1200 can be fixed using an additional brake 1210. This allows a rigid all-wheel drive to be provided, which allows efficient driving without support from the third electric machine EM3.
  • Fig. 11 shows an eleventh embodiment of the drive device 10, which is essentially a combination of the ninth embodiment with the tenth embodiment. Accordingly, only differences are described.
  • the first motor coupling switching element MS1 and the second motor coupling switching element MS2 are also provided, as in the ninth embodiment.
  • the third motor shaft 1000 can thus be mechanically operatively connected to the second motor shaft 14 by means of the first motor coupling switching element MS1.
  • the first motor shaft 12 can thus be mechanically operatively connected to the third motor shaft 1000 by means of the second motor coupling switching element MS2.
  • the summing gear 1200 is provided as in the tenth embodiment.
  • the third motor shaft 1000 can be mechanically operatively connected to the sun gear 1202 via the spur gear stage 1002 by means of an additional switching element 1300.
  • the first drive output shaft 16 is mechanically operatively connected to the ring gear 1204 via the all-wheel spur gear stage 30, so that a torque can be transmitted from the first motor shaft 12 to the second input shaft of the summing gear 1200 via the drive gear 32 .
  • the planet carrier 1206 is permanently connected to the second drive output shaft 18 in a rotationally fixed manner.
  • the additional switching element 1300 allows the third motor shaft 1000 to be separated from the summing gear 1200.
  • the third electric machine EM3 can support the second electric machine EM2 in driving the PTO shafts 40, 42 when the additional switching element 1300 is unactuated, while the first electric machine drives the travel output shafts 16, 18 independently and without the influence of the third electric machine EM3 on a transmission ratio.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

L'invention concerne un dispositif d'entraînement (10) conçu pour une machine de travail, le dispositif d'entraînement (10) comprenant une première machine électrique (EMI) comportant un premier arbre moteur (12), une deuxième machine électrique (EM2) comportant un deuxième arbre moteur (14), un premier arbre récepteur (16), une première prise de force (40) et une deuxième prise de force (42). Le premier arbre moteur (12) peut coopérer mécaniquement avec le premier arbre récepteur (16) par l'intermédiaire d'une transmission (32). Le deuxième arbre moteur (14) peut coopérer mécaniquement avec la première prise de force (40) et la deuxième prise de force (42). La transmission (32) comporte un arbre d'entrée (34), un arbre de sortie (36), un train planétaire (FP) comportant une roue solaire (72), un porte-satellites (74) et une couronne (76), un élément de changement de vitesse (FS) et un frein (B). La roue solaire (72) est reliée solidairement en rotation en continu à l'arbre d'entrée (34) de la transmission (32). Le porte-satellites (74) est relié solidairement en rotation en continu à l'arbre de sortie (36) de la transmission (32). La couronne (76) peut être fixée au moyen du frein (B) de la transmission (32). Le train planétaire (FP) peut être bloqué au moyen de l'élément de changement de vitesse (FS). Cette invention concerne en outre une machine de travail.
PCT/EP2023/062232 2022-05-16 2023-05-09 Dispositif d'entraînement pour une machine de travail WO2023222447A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022204738.9 2022-05-16
DE102022204738.9A DE102022204738A1 (de) 2022-05-16 2022-05-16 Antriebsvorrichtung für eine Arbeitsmaschine

Publications (1)

Publication Number Publication Date
WO2023222447A1 true WO2023222447A1 (fr) 2023-11-23

Family

ID=86657331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/062232 WO2023222447A1 (fr) 2022-05-16 2023-05-09 Dispositif d'entraînement pour une machine de travail

Country Status (2)

Country Link
DE (1) DE102022204738A1 (fr)
WO (1) WO2023222447A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240025244A1 (en) 2022-07-19 2024-01-25 Deere & Company Hybrid or electric-only transaxle arrangement for work vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031399A1 (fr) * 2005-09-15 2007-03-22 Deere & Company Systeme d'entrainement pour un vehicule utilitaire industriel ou agricole
WO2020197463A1 (fr) * 2019-03-28 2020-10-01 Scania Cv Ab Groupe motopropulseur pour un véhicule, véhicule tout électrique et procédé de commande d'un groupe motopropulseur
DE102019214202A1 (de) * 2019-09-18 2021-03-18 Zf Friedrichshafen Ag Antriebsanordnung für eine Zugmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6953409B2 (en) 2003-12-19 2005-10-11 General Motors Corporation Two-mode, compound-split, hybrid electro-mechanical transmission having four fixed ratios
DE102018213890A1 (de) 2018-08-17 2020-02-20 Zf Friedrichshafen Ag Kraftfahrzeuggetriebe, insbesondere für ein landwirtschaftliches oder kommunales Nutzfahrzeug, sowie Kraftfahrzeugantriebsstrang
DE102020202659A1 (de) 2020-03-02 2021-09-02 Zf Friedrichshafen Ag Getriebeanordnung für einen Hybridantrieb eines Kraftfahrzeuges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031399A1 (fr) * 2005-09-15 2007-03-22 Deere & Company Systeme d'entrainement pour un vehicule utilitaire industriel ou agricole
WO2020197463A1 (fr) * 2019-03-28 2020-10-01 Scania Cv Ab Groupe motopropulseur pour un véhicule, véhicule tout électrique et procédé de commande d'un groupe motopropulseur
DE102019214202A1 (de) * 2019-09-18 2021-03-18 Zf Friedrichshafen Ag Antriebsanordnung für eine Zugmaschine

Also Published As

Publication number Publication date
DE102022204738A1 (de) 2023-11-16

Similar Documents

Publication Publication Date Title
EP1926620B1 (fr) Systeme d'entrainement pour vehicule, et vehicule utilitaire agricole
DE102016221060A1 (de) Hybridantriebsstrang für ein hybridgetriebenes Kraftfahrzeug
WO2017076592A1 (fr) Dispositif d'entraînement d'un véhicule hybride et chaîne cinématique équipé d'un tel dispositif d'entraînement
DE102020005394A1 (de) Elektrisches Antriebssystem
WO2023222447A1 (fr) Dispositif d'entraînement pour une machine de travail
DE102021208277B3 (de) Leistungsstrang und Arbeitsmaschine
DE102019200966B4 (de) Leistungsverzweigtes Kraftfahrzeuggetriebe
WO2020078627A1 (fr) Boîte de vitesses pour véhicule à moteur
DE102020214521B4 (de) Hybrid-Getriebe für einen Kraftfahrzeugantriebsstrang
WO2023222448A1 (fr) Dispositif d'entraînement pour machine de chantier
WO2023222499A1 (fr) Dispositif d'entraînement pour une machine de travail
DE102022204741A1 (de) Antriebsvorrichtung für eine Arbeitsmaschine
DE102022204743A1 (de) Antriebsvorrichtung für eine Arbeitsmaschine
DE102022204739A1 (de) Antriebsvorrichtung für eine Arbeitsmaschine
DE102022204744A1 (de) Antriebsvorrichtung für eine Arbeitsmaschine
DE102020005019A1 (de) Elektrisches Antriebssystem
WO2023222449A1 (fr) Dispositif d'entraînement pour engin de chantier
DE102020211061A1 (de) Getriebe für ein Kraftfahrzeug
WO2021028219A1 (fr) Chaîne cinématique hybride pour véhicule automobile
AT526348B1 (de) Verfahren und Antriebseinheit zum Starten einer Primärantriebsmaschine
DE102021208567B3 (de) Getriebe und Antriebsstrang für ein Fahrzeug
DE102021205941B4 (de) Getriebe, Kraftfahrzeugantriebsstrang sowie Verfahren zum Betreiben eines Getriebes
EP3754226B1 (fr) Boîte de vitesses à commande sous charge
WO2023139229A1 (fr) Groupe motopropulseur pour engin de chantier
DE102022204061A1 (de) Antriebsvorrichtung für eine Arbeitsmaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23727928

Country of ref document: EP

Kind code of ref document: A1